CN201396107Y - Retrievable-type cement-squeezing bridge plug - Google Patents
Retrievable-type cement-squeezing bridge plug Download PDFInfo
- Publication number
- CN201396107Y CN201396107Y CN2009200062197U CN200920006219U CN201396107Y CN 201396107 Y CN201396107 Y CN 201396107Y CN 2009200062197 U CN2009200062197 U CN 2009200062197U CN 200920006219 U CN200920006219 U CN 200920006219U CN 201396107 Y CN201396107 Y CN 201396107Y
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- sliding sleeve
- mandrel
- plug
- cement
- bridge plug
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Abstract
The utility model relates to a retrievable-type cement-squeezing bridge plug, which is characterized in that a seating-sealing connector is connected with a kava cone in a threading way, a limiting ring is connected with a kava cylinder in a threading way, the limiting ring is connected with a kava cone stage, the kava is connected with the kava cone through a dovetail-shaped groove in a sliding way and is arranged inside a kava groove of the kava cylinder, a locking ring is arranged inside the seating-sealing connector and is connected with the seating-sealing connector through a saw-tooth-shaped thread, a locking block is arranged inside a locking block groove of a mandrel, an unsealing connector is sleeved on the outer circular surface of the connector, the mandrel, a locking sleeve andthe locking block, the connector is connected with the mandrel in a threading way, a sealing sleeve is connected with the mandrel in a threading way, a sliding sleeve is arranged inside an inner holeof the sealing sleeve, a choke plug is connected with the sealing sleeve in a threading way, the upper part of a sliding sleeve shear pin is arranged inside a threaded hole on the outer circular surface of the sealing sleeve, and a stage on the lower part of the sliding sleeve shear pin is contacted with the lower end surface of the sliding sleeve to limit the sliding sleeve from moving downwards. The retrievable-type cement-squeezing bridge plug is of a tool which is used for the underground cement squeezing and plugging of the oil field and can be taken out and recycled after the cement squeezing and plugging operation.
Description
Affiliated technical field
The utility model relates to a kind of instrument that grey shutoff is squeezed in the down-hole, oil field that is used for, and the retrievable that can take out recovery after the especially crowded grey shutoff operation squeezes grey capping tools.
Background technology
At present, in the oil field development manufacturing process, especially adopt at formation testing, underground work, oil-gas Layer transformation, formation testing, notes in the work progress such as layer position adjustment, often need carry out temporary blocking or permanent shutoff to oil, gas, water layer with the down-hole capping tools, sometimes, need the outer channelling of squeeze method shutoff perforated interval or squeeze method shutoff sleeve pipe to carry out the secondary well cementation.
What normally used in the oil field is that a kind of drillable squeezes grey bridging plug, it is simple in structure that this drillable squeezes grey bridging plug, cost is low, can be used for squeeze method shutoff operation, but this instrument slips is made with monolithic ductile iron, and slips fragility is big, and the crowded grey bridging plug of drillable slips very easily takes place in the process of going into the well breaks grappling and bit freezing takes place, this in addition drillable squeezes and can not take out recovery after grey bridging plug sets, can only bore gall bad.Chinese patent " retrievable bridge plug of cement squeeze " (patent No.: 200320110198.6) disclose a kind of can squeeze method shutoff operation, also can take out recovery behind the squeeze method, but this tool performance instability, instrument sets in the process, slide over vibration and often open down, the switch of the uncontrollable sliding sleeve of subsequent job intubate, cement is counter behind the squeeze method tells to instrument, instrument can't take out, and shutoff was lost efficacy.
Summary of the invention
In order to overcome existing oil field oil, gas, water layer are carried out squeeze method shutoff retrievable bridge plug of cement squeeze unstable properties, instrument sets in the process, sliding over vibration often opens down, the switch of the uncontrollable sliding sleeve of subsequent job intubate, cement is counter behind the squeeze method tells to instrument, instrument can't take out, the deficiency that shutoff was lost efficacy, the purpose of this utility model just is to provide a kind of stable performance, can be used for the down-hole, oil field and squeeze the instrument of grey shutoff, the retrievable that can take out recovery after the especially crowded grey shutoff operation squeezes grey capping tools.
The technical scheme that its technical problem that solves the utility model adopts is: set fitting sleeve and separating on the sealing joint, set on the shear pin in the screwed hole on setting the joint periphery, setting the insertion of shear pin lower step separates in the periphery groove of sealing joint, the sand control rubber cushion is positioned at the groove that sets the joint inner headed face, be enclosed within and separate on the sealing joint, setting joint is threaded with the slips cone, spacing ring, the sand control packing element is enclosed within on the periphery of slips cone, spacing ring is threaded with the slips tube, spacing ring is connected with slips cone step, the slips cone, the slips jacket casing is on mandrel, slips and slips cone are slidingly connected by dovetail groove, and be positioned at the slip groove of slips tube, lock ring is positioned at and sets joint, and with set the joint saw-tooth thread and be connected, lock tube is enclosed within on the mandrel, lock dog is positioned at the lock dog groove of mandrel, moving axially of lock tube and mandrel limited in lock dog hole by lock tube, the deblocking fitting sleeve is at connector, mandrel, lock tube, on the periphery of lock dog, limited the radial motion of lock dog, in the screwed hole on the deblocking shear pin on separating the sealing joint periphery, deblocking shear pin lower step is inserted in the outside groove of mandrel, connector is connected with mandrel thread, sealing shroud is connected with mandrel thread, packing element, spacer ring, the slips jacket casing is on sealing shroud, sliding sleeve is positioned at the endoporus of sealing shroud, O shape circle is housed in the seal groove on the sealing shroud endoporus, respectively with mandrel, the periphery of sliding sleeve forms sealing, plug is threaded with sealing shroud, O shape circle is housed in the seal groove on the sealing shroud outside, and forms sealing, in the screwed hole on the sliding sleeve shear pin on the sealing shroud periphery with the plug endoporus, sliding sleeve shear pin lower step contacts with the sliding sleeve lower surface, and the restriction sliding sleeve moves down.Connector top has internal thread to be used for being connected with the bridging plug setting tool, separating sealing joint top has external screw thread and inner via hole to be convenient to salvage with bridging plug fishing tool deblocking, the lock tube periphery is provided with saw-tooth thread, be meshed with the saw-tooth thread that establishes lock ring inside when being convenient to retrievable bridge plug of cement squeeze and setting, the plug outside is provided with vulcanized rubber, be convenient to reduce the power that clings of retrievable bridge plug of cement squeeze and cement, sliding sleeve is provided with opening, be convenient in sealing shroud, slide after sliding sleeve shrinks, mandrel is provided with cannelure, is convenient to retrievable bridge plug of cement squeeze and sets the disconnected cannelure of post-tensioning and realize giving up.
During use, elder generation is connected retrievable bridge plug of cement squeeze and is lowered to the downhole designs position with the bridging plug setting tool, start the bridging plug setting tool, the bridging plug setting tool promotes to set joint and moves downward, setting shear pin cuts off, the slips cone promotes slips and is anchored on the sleeve pipe, the sand control packing element is compressed to internal surface of sleeve pipe, packing element compression seal sleeve pipe annular space, lock ring is meshed the retrievable bridge plug of cement squeeze self-locking with the saw-tooth thread of lock tube simultaneously, when setting force surpasses the tension limit of cannelure on the mandrel, mandrel is broken at the cannelure place, and retrievable bridge plug of cement squeeze sets in the downhole designs position, trips out the bridging plug setting tool; When squeezing ash, be lowered to intubate, insert retrievable bridge plug of cement squeeze, open sliding sleeve and squeeze grey operation, after the crowded grey end of job, the upper lifting pipe post is extracted intubate; After treating mortar setting, be lowered to bridging plug deblocking instrument and catch the sealing joint of separating of retrievable bridge plug of cement squeeze, on carry bridging plug deblocking instrument, the deblocking shear pin is cut off, lock dog loses understands the fixing of sealing joint, lock dog skids off the lock dog groove of mandrel, the retrievable bridge plug of cement squeeze self-locking releasing, sand control packing element, packing element retraction, the up drive slips of slips cone is return in the slips tube, the retrievable bridge plug of cement squeeze deblocking, retrievable bridge plug of cement squeeze can be taken out with bridging plug deblocking instrument and be reclaimed.
The beneficial effects of the utility model are, a kind of instrument that grey shutoff is squeezed in the down-hole, oil field that is used for is provided, and especially squeeze the retrievable that can take out recovery after the grey shutoff operation and squeeze grey capping tools.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Accompanying drawing is a structural representation of the present utility model.
In the accompanying drawing 1, set joint; 2, set shear pin; 3, sand control rubber cushion; 4, connector; 5, separate sealing joint; 6, lock ring; 7, deblocking shear pin; 8, lock dog; 9, sand control packing element; 10, lock tube; 11, spacing ring; 12, slips cone; 13, slips; 14, mandrel; 15, slips tube; 16, sealing shroud; 17, O shape circle; 18, sliding sleeve; 19, packing element; 20, spacer ring; 21, plug; 22, sliding sleeve shear pin.
The specific embodiment
As shown in drawings, setting joint 1 is enclosed within and separates on the sealing joint 5, set on the shear pin 2 in the screwed hole on setting joint 1 periphery, setting the insertion of shear pin 2 lower step separates in the periphery groove of sealing joint 5, sand control rubber cushion 3 is positioned at the groove that sets joint 1 inner headed face, be enclosed within and separate on the sealing joint 5, setting joint 1 is threaded with slips cone 12, spacing ring 11, sand control packing element 9 is enclosed within on the periphery of slips cone 12, spacing ring 11 is threaded with slips tube 15, spacing ring 11 is connected with slips cone 12 steps, slips cone 12, slips tube 15 is enclosed within on the mandrel 14, slips 13 and slips cone 12 are slidingly connected by dovetail groove, and be positioned at the slip groove of slips tube 15, lock ring 6 is positioned at and sets joint 1, and with set joint 1 saw-tooth thread and be connected, lock tube 10 is enclosed within on the mandrel 14, lock dog 8 is positioned at the lock dog groove of mandrel 14, limited moving axially of lock tube 10 and mandrel 14 by the lock dog hole of lock tube 10, separate sealing joint 5 and be enclosed within connector 4, mandrel 14, lock tube 10, on the periphery of lock dog 8, limited the radial motion of lock dog 8, in the screwed hole on the deblocking shear pin 7 on separating sealing joint 5 peripheries, deblocking shear pin 7 lower step are inserted in the outside groove of mandrel 14, connector 4 is threaded with mandrel 14, sealing shroud 16 is threaded with mandrel 14, packing element 19, spacer ring 20, slips tube 15 is enclosed within on the sealing shroud 16, sliding sleeve 18 is positioned at the endoporus of sealing shroud 16, O shape circle 17 is housed in the seal groove on sealing shroud 16 endoporus, respectively with mandrel 14, the periphery of sliding sleeve 18 forms sealing, plug 21 is threaded with sealing shroud 16, O shape circle 17 is housed in the seal groove on sealing shroud 16 outsides, and form sealing with plug 21 endoporus, in the screwed hole on the sliding sleeve shear pin 22 on sealing shroud 16 peripheries, sliding sleeve shear pin 22 lower step contact with sliding sleeve 18 lower surfaces, and restriction sliding sleeve 18 moves down.
Claims (4)
1, retrievable bridge plug of cement squeeze, setting fitting sleeve is separating on the sealing joint, setting joint is threaded with the slips cone, spacing ring is threaded with the slips tube, spacing ring is connected with slips cone step, slips and slips cone are slidingly connected by dovetail groove, and be positioned at the slip groove of slips tube, lock ring is positioned at and sets joint, and with set the joint saw-tooth thread and be connected, lock dog is positioned at the lock dog groove of mandrel, the deblocking fitting sleeve is at connector, mandrel, lock tube, on the periphery of lock dog, connector is connected with mandrel thread, and sealing shroud is connected with mandrel thread, and sliding sleeve is positioned at the endoporus of sealing shroud, plug is threaded with sealing shroud, in the screwed hole on the sliding sleeve shear pin on the sealing shroud periphery, sliding sleeve shear pin lower step contacts with the sliding sleeve lower surface, and the restriction sliding sleeve moves down.
2, retrievable bridge plug of cement squeeze according to claim 1, it is characterized in that: connector top has internal thread to be used for being connected with the bridging plug setting tool, separating sealing joint top has external screw thread and inner via hole to be convenient to salvage with bridging plug fishing tool deblocking, the lock tube periphery is provided with saw-tooth thread, be meshed with the saw-tooth thread that establishes lock ring inside when being convenient to retrievable bridge plug of cement squeeze and setting, the plug outside is provided with vulcanized rubber, be convenient to reduce the power that clings of retrievable bridge plug of cement squeeze and cement, sliding sleeve is provided with opening, be convenient in sealing shroud, slide after sliding sleeve shrinks, mandrel is provided with cannelure, is convenient to retrievable bridge plug of cement squeeze and sets the disconnected cannelure of post-tensioning and realize giving up.
3, retrievable bridge plug of cement squeeze according to claim 1 is characterized in that: in the screwed hole on the sliding sleeve shear pin on the sealing shroud periphery, sliding sleeve shear pin lower step contacts with the sliding sleeve lower surface, and the restriction sliding sleeve moves down.
4, according to the described retrievable bridge plug of cement squeeze of claim 2., it is characterized in that: the plug outside is provided with vulcanized rubber, is convenient to reduce the power that clings of retrievable bridge plug of cement squeeze and cement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200062197U CN201396107Y (en) | 2009-02-24 | 2009-02-24 | Retrievable-type cement-squeezing bridge plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200062197U CN201396107Y (en) | 2009-02-24 | 2009-02-24 | Retrievable-type cement-squeezing bridge plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201396107Y true CN201396107Y (en) | 2010-02-03 |
Family
ID=41618613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200062197U Expired - Fee Related CN201396107Y (en) | 2009-02-24 | 2009-02-24 | Retrievable-type cement-squeezing bridge plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201396107Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103850663A (en) * | 2012-11-29 | 2014-06-11 | 阜宁县宏达石化机械有限公司 | Extractable type integrated setting and ash-extruding bridge plug |
| CN110821441A (en) * | 2018-08-13 | 2020-02-21 | 中国石油天然气股份有限公司 | Cement squeezing bridge plug |
-
2009
- 2009-02-24 CN CN2009200062197U patent/CN201396107Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103850663A (en) * | 2012-11-29 | 2014-06-11 | 阜宁县宏达石化机械有限公司 | Extractable type integrated setting and ash-extruding bridge plug |
| CN103850663B (en) * | 2012-11-29 | 2016-08-03 | 阜宁县宏达石化机械有限公司 | Retrievable is sat and is squeezed one bridging plug |
| CN110821441A (en) * | 2018-08-13 | 2020-02-21 | 中国石油天然气股份有限公司 | Cement squeezing bridge plug |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100203 Termination date: 20140224 |